Generic Local Function and List

Thank you for reading! I'm getting a list of objects (from a dbcontext), then I created a method to pass this list to a Local Function, the method accepts the list but when I try to loop, instead of being able to show the content of my object members I get an error saying: "'T' does not contain a definition for 'Id' and no accessible extension method 'Id' accepting a first argument of type 'T' could be found (are you missing a using directive or an assembly reference?) " And this problem is not only with Id, I can't access any of the properties, please check the code: would you please help me find what I am missing? thank you for your advice.

public IActionResult Racks()
{
List mylist = db.OldRacksAustin.ToList();
ProcessMyList(mylist);
void ProcessMyList( List list)
{
foreach (T item in list)
{
Debug.WriteLine(item.Id); /* PROBLEMATIC LINE */
}
}
return Json("done");
}

And the DBcontext entity (object) looks like...

[Table("OLD-Racks-Austin")]
public class OldRackAustin
{
[Key]
public int Id { get; set; }
public string Rack_Type { get; set; }
public string Serial_Number { get; set; }
public short Pages { get; set; }
public int? Rack_Capacity { get; set; }
public string Status { get; set; }
public string Type { get; set; }
public string Subtype { get; set; }
}